Event Player connect to the server

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Hello, guys. I have simple question. How to catch the event connection player to server?

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Thank you. Can you give an example?

(How to register a class implements IPlayerTracker in Forge?)

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Thank you very much. I have one more question. I want to bind to the player some information to have quick access to it. I understand that I can use an associative array, but I want to receive information in O (1). Tell me please what i need to use for this.

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Thank you so much for helping me. Can you tell me when call saveNBTData and loadNBTData? When i call  registerExtendedProperties and getExtendedProperties?

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I would be very grateful if you also give an example how to use it all right.

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As I understand it, these functions are called when a player enters or leaves the server or moved to another world. So if I keep information about player on the database, I can leave these functions are empty?

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]Yes. But why would you want to do that?

Most likely, I'm just confused. I have a simple task:

The player is playing on my server can earn coins that are tied to their account in my site. When player connects to the server, I need to install their number. But each time send request to database as their number is render for a long time.

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If I understand you correctly you probably just want to cache the value in the player data.

Yes.

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Make access to the data as quickly as possible. To do this, should I use ExtendedProperties?

Aaaa, I'm confused

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Repeat once more. If I load the data from database when the player connects, and write them a change, I can leave empty read and loadNBT functions?

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Hello again. I have a new question. How to change the ExtendedProperties anywhere in code?

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Up!

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You didn't understand me. I understand how to get the value. I cann't understand how to update this value, because #registerExtendedProperties only works when calling the entity's constructor, and #getExtendedProperties only get the new instance.

P.S.  If you write code example, I would be very grateful)

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Okey.

I register onEntityConstruct like this:

 

public void onEntityConstruct(EntityConstructing event) {

        if (event.entity instanceof EntityPlayer) {

    ClientInformation properties = new ClientInformation();

        properties.setMoney(100);

            event.entity.registerExtendedProperties(ClientInformation.IDENTIFICATION, properties);

        }

}

 

I update somewhere ExtendedProperties like this:

 

((ClientInformation)player.getExtendedProperties(ClientInformation.IDENTIFICATION)).setMoney(200);

 

However, the value of which I render does not change:

 

@ForgeSubscribe(priority = EventPriority.NORMAL)

public void onRenderHUD(RenderGameOverlayEvent event) {

if (event.isCancelable() || event.type != ElementType.EXPERIENCE) {

return;

}

 

GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);

GL11.glDisable(GL11.GL_LIGHTING);

 

ClientInformation clientInfo = ClientInformation.getInformation(this.mc.thePlayer);

String money  = "$" + ((ClientInformation)(this.mc.thePlayer).getExtendedProperties(ClientInformation.IDENTIFICATION)).getMoney();

                //some code...

}

 

P.S. For some reason i can't to use the formatting tools =(

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It is better to use DataWatcher?